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-rw-r--r--mlir/lib/IR/AffineStructures.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/mlir/lib/IR/AffineStructures.cpp b/mlir/lib/IR/AffineStructures.cpp
index 5179e935007..d043e78f059 100644
--- a/mlir/lib/IR/AffineStructures.cpp
+++ b/mlir/lib/IR/AffineStructures.cpp
@@ -2059,6 +2059,7 @@ bool FlatAffineConstraints::unionBoundingBox(
auto extent = getConstantBoundOnDimSize(d, &lb, &lbDivisor);
if (!extent.hasValue())
// TODO(bondhugula): symbolic extents when necessary.
+ // TODO(bondhugula): handle union if a dimension is unbounded.
return false;
otherLb.clear();
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